Land Cover and Land Use Change Decreases Net Ecosystem Production in Tropical Peatlands of West Kalimantan, Indonesia

编号 10032202

推送时间 20211220

研究领域 森林生态 

年份 2021 

类型 期刊 

语种 英语

标题 Land Cover and Land Use Change Decreases Net Ecosystem Production in Tropical Peatlands of West Kalimantan, Indonesia

来源期刊 forest

期 第322期

发表时间 20211118

关键词 deforestation;  forest logging;  tropical climate;  peat swamp forests;  oil palm estate;  NEP; 

摘要 Deforested and converted tropical peat swamp forests are susceptible to fires and are a major source of greenhouse gas (GHG) emissions. However, information on the influence of land-use change (LUC) on the carbon dynamics in these disturbed peat forests is limited. This study aimed to quantify soil respiration (heterotrophic and autotrophic), net primary production (NPP), and net ecosystem production (NEP) in peat swamp forests, partially logged forests, early seral grasslands (deforested peat), and smallholder-oil palm estates (converted peat). Peat swamp forests (PSF) showed similar soil respiration with logged forests (LPSF) and oil palm (OP) estates (37.7 Mg CO2 ha?1 yr?1, 40.7 Mg CO2 ha?1 yr?1, and 38.7 Mg CO2 ha?1 yr?1, respectively), but higher than early seral (ES) grassland sites (30.7 Mg CO2 ha?1 yr?1). NPP of intact peat forests (13.2 Mg C ha?1 yr?1) was significantly greater than LPSF (11.1 Mg C ha?1 yr?1), ES (10.8 Mg C ha?1 yr?1), and OP (3.7 Mg C ha?1 yr?1). Peat swamp forests and seral grasslands were net carbon sinks (10.8 Mg CO2 ha?1 yr?1 and 9.1 CO2 ha?1 yr?1, respectively). In contrast, logged forests and oil palm estates were net carbon sources; they had negative mean Net Ecosystem Production (NEP) values (?0.1 Mg CO2 ha?1 yr?1 and ?25.1 Mg CO2 ha?1 yr?1, respectively). The shift from carbon sinks to sources associated with land-use change was principally due to a decreased Net Primary Production (NPP) rather than increased soil respiration. Conservation of the remaining peat swamp forests and rehabilitation of deforested peatlands are crucial in GHG emission reduction programs. View Full-Text

服务人员 王璐

服务院士 蒋有绪

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